Furnace-grate bar.



No. 806,122. I PATENTBD DEO.5,1905.

"G. A. ELLIS.

FURNACE GRATB BAR.

APPLICATION FILED 1330.26. 1903.

mlnmlil+ YB .MHIHHHH v H O I wi/ lmeweo UNITED STATES PATENT OFFICE-FURNAOE-GFIATE BAR.

Specification of Letters Patent.

Patented Dec. 5, .1905.

Application filed December 26,1903. Serial No. 186,664.

To a whom it may concern:

Be it known that I, GEORGE A. ELLIs, a citi zen of the United States,residing at Mount Vernon, in the countyof Westchester and State of NewYork, have invented certain new and useful Improvements in Furnace-GrateBars, of which the following is a full, clear, and exact specification,reference being had to the accompanying drawings and to the letters ofreference marked thereon.

My invention has special relation to that class of bars forfurnace-grates commonly known as pocketing and cutting-off bars that is,bars which are rocked through the medium of depending projections andsuitable connections, the said bars being so constructed that whenrockedin one direction they will catch and'hold or pocket a portion of thematerial from above the grate, and

when rocked in the opposite direction they will cut off the pocketedportion, drop it through between the bars, and then afford agrate-surface for maintaining the fire-bed above. 7 v

The principal objects of my present'invention 'are to1simplify andimprove the-construction of the grate-bars y themselves-that is, to makeeach bar of separate pieces, which are mounted upon and easily removablefrom a longitudinal supportingbar without disturbing anyv of the othersections on the supporting-bar or disturbing or dismounting the baritself.

' To'accomplish these objects and to secure other and further advantagesin the matters of construction, application, operation, and use, myimprovements involve certain new and useful peculiarities ofconstruction and relative arrangements and combinations of parts, aswill be herein first fully described and then pointed out in the claims.

In the accompanying drawings, forming part of this specification, Figure1 is a side elevation of one of the intermediate removable sections ofthe grate-bar, the same being shown as locked in position upon thesupporting-bar, which latter is represented in cross-section. Fig, 2 isa front view of a portion of the-supporting-bar shown in Fig. 1. Fig. 3,is a top view of the projecting piece of the grate-bar section whichenters the recess in the lower' portion of the supporting-bar, showingthe side notches which accommodate the locking-washer, the view beingenlarged beyond that of Fig. 1. Fig.-

. 4 is an end elevation corresponding with 3. Fig. 5 is a face view ofthe bifurcated Washer shown in Fig. 1 and employed'to'lock thevgrate-barsection in place upon the sup:- porting-bar. Fig. 6 is a front view of afragment of a grate-bar constructed in accordance with my invention,showing one of. the inter-- mediate removable sections, one sectionarranged to receive the means by which power is applied torock the bar,and anend section which has a trunnion on its outer face. Fig. 7 is aside view corresponding with Fig. 6

showing the end section with its trunnion, 'a

portion of the fuel-supporting leaf being broken away or omitted. g Inall thefigures like letters of reference, wherever they occur, indicatecorresponding parts.

Several grate-bars going to make upthe grate-surface, of whatever extentthat may be,are each jour'naled at their ends and rocked by suitablemeans located below the journals,

each complete bar being preferably slightly curved on top and having afront portion slightly sharpened, so as to effect the desired cuttingoff of the spent fuel, the bars being first rocked backwardly, when thelower portions of the bars form pockets to receive a portion of thematerial, then rocked forward to out off the pocketed portion from theremainderof the fire-bed and drop this portion into the ash pit below,the operation of pocketing and cutting off being repeated as often asmay be necessary.

A represents one of the intermediate removable sections of the bar, ofwhich there may be any number, according to the desired length ofgrate-bar.

B is a supporting-bar on which the several separate sections are to bemounted. This supporting-bar may be of any desired shape incross-section, and it is preferably made of rolled -or merchantable ironor steel, being cut off to the proper or desired length and re-- cessedon its lower margin, as at a; a a, the

recesses being located at the proper distances from each other so as toproperly separate or space the applied sectionso-f the'grate-bar.

trifle, asat b, and upa tr ifie, as ate, and the pro.-

IIO

jection cl is so located as to enter the recess an easily, leaving aslight distance above the projection d when finally located. Thesections are hooked over the top of the'supportingbar and then swung toplace, as shown in Fig. 1, the recessed portion 6 and 0 permitting ofthis movement without cramping.

The projection 03 extends from one side of the bar beyond the other sideand serves to prevent the section from rising with respect to thesupporting-bar, and when the section is firmly locked in place it mustmove with the supporting-bar. Any simple and convenient means of lockingthe sections in place may be adopted. According to the form shown Isupply the projection d with a shallow recess, as e e, on each side andinto these recesses drop a bifurcated washer, as C, Fig. 5, afterwardbending the ends of this washer under the supporting-bar, as indicatedin Fig. 1. This forms a substantial lock for the section and holds thelatter in its working position on the supporting-bar. To dismount one ofthe sectionssustained as above explained, it will only be necessary toremove the washer and then swing the section out of place. Thisconstruction enables new sections to be readily substituted for otherswhich may be broken or damaged, and this without disturbing any of theadjacent sections and without the necessity of removing the bar from itsposition in the grate. To provide for this ready and convenient removaland substitution is one of the chief features of my invention and one ofits prominent advantages. If a section be broken, as sometimes occurs,it is of no further value, and the projection (I may be broken off by ablow with a hammer rather than to take the trouble of straightening outthe washer and pulling it out of place.

When the projection d is broken off or the washer otherwise removed, ofcourse the section may be easily dismounted from its supporting-bar, andthen another section may be substituted for the one removed.

By locating the supporting-bar at one side of the axis or the line onwhich the grate-bar rocks it will be apparent that I obviate theoccupation of room in the space below the top of the grate whichconstitutes the pocket when the grate-bar is rocked back. Of course Imay locate the supporting-bar at any desired point beyond the axis ofthe grate-bar; but it is very desirable to set it back far enough toaiford the requisite capacity of pocketing, so as to obviate thenecessity of too much working of the grate-bars.

At D is a removable section also applied to the supporting-bar B, thissection having an arm D, to which the means for rocking the grate-barmay be applied. This section D may be located at any point within thelength of the supporting-bar, and obviously it should be connected withthe supporting-bar in a substantial manner, for it is through it thatthe power is communicated to the bar. It is made to hook over and restupon the top of the bar in the same way as the other sections beforedescribed, and at the bottom it is preferably secured by means moresubstantial than the washer heretofore described. For this connection Ihave shown a boltf, a washer g, and a nut it. With this construction ifit be necessary to remove this section D the nut may be easily removed,together with the washer, when the section may be swung off in the sameway as the other intermediate sections.

Of course the grate-bar must be supplied with trunnions, and for thispurposeI mount upon the ends of the supporting-bar end sections, as E,supplied with trunnions, as F, to rest in the seats or beds provided forthem. In these end sections are recesses which admit the ends of thesupporting-bar, and the end sections are keyed to the supporting-bar byany convenient form of key or pin, as the cotter-pin z', which passesthrough a perforation in the extremity of the supporting-bar.

The advantages of making the grate-bar in sections instead of in onesolid casting are obvious, and the advantages of making the differentsections separately detachable and replaceable without disturbing thegrate-bar or any of the adjacent sections must also be apparent. The twoend sections are similar in construction except that one is made for theright-hand end of the bar and the other for the left-hand end. g

In former constructions it has been proposed to slide separatecentrally-perforated sections upon an axial bar. This necessitates anenlargement of the material of the section in the portion required forthe pocket and consequent diminution of the capacity of the pocket, andtherefore too frequent working of the grate-bars in order to efi ect thedesired clearing of the fire-bed. It also necessitates dismounting ofthe en tire grate-bar whenever repairs to any one section are requiredand precludes the possibility of replacing one section withoutdisturbing any of the others.

Being constructed and arranged substantially in accordance with theforegoing explanations, my improved grate-bar will be found to answerall the purposes or objects of my invention hereinbefore alluded to.

Having now fully described my invention, what I claim as new herein, anddesire to secure by Letters Patent, is

'1. In a pocketing and cutting-off bar for grates, the combination witha supporting-bar of separate fuel-supporting sections mounted thereon,and means for keying the sections in place, said sections being eachrecessed as explained and adapted to be hooked over the top of thesupporting-bar and having projections formed integrally with them andextending under and beyond the supporting-bar and being keyed to the barand removable thereforth, the combination with the supportingbarrecessed on its under side of separate fuelsupporting sections held onthe, bar by projections'on the sections extending in the cor respondingrecesses from one side of the bar beyond the other side and theresecured, each fuel-supporting section mounted on the bar .and maderemovable therefrom without disturbing the other sections, one ofsaidsections being provided with means for receiving the vpowerappliance and arranged to move the grate-bar, substantially. as shownand described.

In testimony whereof I have signed my name. to this specification in thepresence of two subscribing witnesses. V

.GEORGE A. ELLIS. Y

"Witnesses:

O. 'SEDGWICK,

WORTH O'seoop

